Frustrating problem with XFINITY wifi - Someone PLEASE help

Hello - I am very frustrated with this problem.  I can connect to my home network and xfinitywifi (unsecured) on my iPhone - but when I try to connect to XFINITY - I get a message that says "incorrect password".  This takes me to a screen that has my correct username and I type in my password -but it still says incorrect password.  There is NO OPTION to "Forget the network".  I have tried many solutions.  I downloaded the Xfi app and installed the Xfinity profile on my phone.  That did not help. I deleted the profile.  I downloaded the Xfinity hotspot app and reinstalled the Xfinity profile.  I was then able to connect to XFINITY network so I thought the problem was solved.  However, two days later - when trying to connect to XFINITY I got the same incorrect password message.  In the profile settings XFINITY is showing.  I tried deleting and reinstalling the profile and hotspots app but that did not help.  I have no idea why this is happening because my username and password WERE recognized - and then the password was not.  Any help would be greatly appreciated.  Thank you.